Judge not thy friend until thou standest in his place.

If I am not for myself, then who will be for me? But when I am for myself, then what am "I"? And if not now, when?

Say not: “When I have free time I shall study”, for you may perhaps never have any free time

What you yourself hate, don't do to your neighbor. This is the whole law; the rest is commentary. Go and study.

The shy man will not learn; the impatient man should not teach.

Golden Rule”: “That which is hateful to you, do not do to your fellow. That is the whole Torah; the rest is the explanation; go and learn.

Judge not thy friend until thou standest in his place.