Hillel said, do not separate from the community, do not trust yourself till the day you die, do not judge your fellow until you reach his place, do not make a statement which cannot be understood which will [only] later be understood, and do not say when I have free time I will learn, lest you not have free time.
He would also say: A boor cannot be sin-fearing, an ignoramus cannot be pious, a bashful one cannot learn, a short-tempered person cannot teach, nor does anyone who does much business grow wise. In a place where there are no men, strive to be a man
Which is the right path for man to choose for himself? Whatever is harmonious for the one who does it, and harmonious for mankind.
Be as careful with a minor mitzvah as with a major one, for you do not know the rewards of the mitzvot. Consider the cost of a mitzvah against its rewards, and the rewards of a transgression against its cost.
Contemplate three things, and you will not come to the hands of transgression: Know what is above from you: a seeing eye, a listening ear, and all your deeds being inscribed in a book.