Kethuboth, fol. 65, col. 1.

He who traverses so much as four ells in the land of Israel is sure of everlasting life.

Ibid., fol.  III, col. 1.

To walk even four ells without bowing the head is an offense to Heaven; for it is written (Isa. vi. 3), “The whole earth is full of His glory.”

Kiddushin, fol. 31, col. 1.

There are four who are accounted as dead:—­The pauper, the leper, the blind man, and he who has no male children.

Nedarin, fol. 64, col. 2.

Four things mark the characters of men:—­He who says what is mine is mine, and what is thine is thine, is, according to some, a moderate man, but, according to others, a child of Sodom; he who says what is mine is thine, and what is thine is mine, is an ignorant man; he who says what is mine is thine and what is thy own is also thine, is a pious man; he who says mine and thine are both my own, is a wicked man.

Avoth, chap. 5, sec. 16.

There are four kinds of men, according to their degrees of passionateness:—­He who is easily provoked and as readily pacified, and who loses more than he gains; he whom it is difficult to rouse and as difficult to appease, and who gains more than he loses; he who is not readily provoked, but easily pacified, who is a pious man; he who is easily provoked and with difficulty appeased, who is a wicked man.

Ibid., chap. 5, sec. 19.

There are four classes of men who give alms, and they are thus distinguished:—­He who is willing to give, but unwilling that others should do so, he has an evil eye toward others; he who wishes others to give, but does not do so himself, he has an evil eye toward himself; he who gives, and induces others to give, he is pious; he who gives not, nor wishes others to give he is wicked.

Avoth, chap 5, sec. 19.

There are four marks by which one disciple differs from another:—­One learns and does not teach, one teaches and does not learn, one learns and teaches, and one neither learns nor teaches.

Avoth d’Rab.  Nathan, chap. 29.

Four things, if kept in view and gravely pondered over, deter from sin:—­That a man consider whence he cometh, whither he goeth, who the judge will be, and what the future will bring to pass.

Derech Eretz, chap. 3.

What is the meaning of that which is written (Ps. lxxxvii 2), “The Lord loveth the gates of Zion more than all the dwellings of Jacob?” The answer is, The Lord loveth the gates that are marked with the Halachah more than the synagogues and the schools; and this agrees with what Rabbi Cheeya bar Ami has said, in the name of Ulla, that since the destruction of the Temple nothing else has remained to God in His world but four ells of the Halachah.

Berachoth, fol. 8, col. 1.

Whoso walks even four ells with a proud unbending gait is as though he spurned with his haughty head the feet of the Shechinah; for it is written (Isa. vi. 3), “The whole earth is full of His glory.”