… Sincerity is the way of Heaven. The attainment of sincerity is the way of men. … He who attains to sincerity is he who chooses what is good, and firmly holds it fast. To this attainment there are requisite the extensive study of what is good, accurate inquiry about it, careful reflection on it, the clear discrimination of it, and the earnest practice of it. …
誠者，天之道也；誠之者，人之道也。…誠之者，擇善而固執之者也。博學之，審問之，慎思之，明辨之，篤行之。
…but say, "O my Lord! advance me in knowledge."
Keep thy tongue from evil, And thy lips from speaking guile.
Truth is higher than everything; but higher still is truthful living.
Lying lips are abomination to the Lord: but they that deal truly are his delight.
Him I call indeed a Brâhmana who utters true speech, instructive and free from harshness, so that he offend no one.
Therefore, seeker after the highest truth, study the sacred lore, in order to cause yourself and others to attain perfection.
'Now that which is that subtile essence (the root of all), in it all that exists has its self. It is the True. It is the Self, and thou, O Svetaketu, art it.'
Little is known by any one but the spiritual man, / Who has in his heart a touchstone of vital truth. / The others, hovering between two opinions, / Fly towards their nest on a single wing. / Knowledge has two wings, opinion only one wing; / Opinion is weak and lopsided in its flight. …