Pirkei Avot

Akabia, the son of Mahalalel, said, "Consider three things, and thou wilt not come within the power of sin: know whence thou camest, and whither thou art going, and before whom thou wilt in the future have to give an account and reckoning. Whence thou camest: from a fetid drop; whether thou art going: to a place of dust, worms, and maggots; and before whom thou wilt in the future have to give an account and reckoning: before the Supreme King of kings, the Holy One, blessed be He

Be careful in reading the Shema and the Amidah; and when thou prayest, consider not thy prayer as a fixed (mechanical) task, but as (an appeal for) mercy and grace before the All-present, as it is said, 'For he is gracious and full of mercy, slow to anger, and abounding in loving-kindness, and repenteth him of the evil'; and be not wicked in thine own esteem

Let the property of thy friend be as dear to thee as thine own; prepare thyself for the study of Torah, since the knowledge of it is not an inheritance of thine, and let all thy deeds be done in the name of God