The strongest memory is not as strong as the weakest ink.

Only the supremely wise and the ignorant do not alter.

Conscience is the inner voice which warns us that someone might be looking. Hear and you forget, see and you remember, do and you understand.

Every truth has four corners: as a teacher I give you one corner, and it is for you to find the other three.

All things are nourished together without their injuring one another. The courses of the seasons, and of the sun and moon, are pursued without any collision among them. The smaller energies are like river currents; the greater energies are seen in mighty transformations. It is this which makes heaven and earth so great.

It is more shameful to distrust our friends than to be deceived by them.

Happiness is not at the top of the mountain, but in how to climb.