Whoever would be a teacher of men let him begin by teaching himself before teaching others; and let him teach by example before teaching by word. For he who teaches himself and rectifies his own ways is more deserving of respect and reverence than he who would teach others and rectify their ways.
You should respect each other and refrain from disputes; you should not, like water and oil, repel each other, but should, like milk and water, mingle together.
Fear, when your friends say to you what you have done well, and say it through; but when they stand with uncertain timid looks of respect and half-dislike, and must suspend their judgement for years to come, you may begin to hope.
Every man is to be respected as an absolute end in himself; and it is a crime against the dignity that belongs to him as a human being, to use him as a mere means for some external purpose.
Respect the child. Wait and see the new product of Nature. Nature loves analogies, but not repetitions. Respect the child. Be not too much his parent. Trespass not on his solitude.
Faith is harder to shake than knowledge, love succumbs less to change than respect, hate is more enduring than aversion, and the impetus to the mightiest upheavals on this earth has at all times consisted less in a scientific knowledge dominating the masses than in a fanaticism which inspired them and sometimes in a hysteria which drove them forward.
The scientist is activated by a wonder and awe before the mysterious comprehensibility of the universe which is yet finally beyond his grasp. In its profoundest depths it is inaccessible to man.