It is a mistake to make propaganda many-sided, like scientific instruction, for instance... As soon as you sacrifice this slogan and try to be many-sided, the effect will piddle away, for the crowd can neither digest nor retain the material offered.
Most persons are so absorbed in the contemplation of the outside world that they are wholly oblivious to what is passing on within themselves. The premature death of millions is primarily traceable to this cause. Even among those who exercise care, it is a common mistake to avoid imaginary, and ignore the real dangers. And what is true of an individual also applies, more or less, to a people as a whole.
The failure and the success both believe in their hearts that they have accurately balanced points of view, the success because he's succeeded, and the failure because he's failed. The successful man tells his son to profit by his father's good fortune, and the failure tells his son to profit by his father's mistakes.
It is a very grave mistake to think that the enjoyment of seeing and searching can be promoted by means of coercion and a sense of duty. To the contrary, I believe it would be possible to rob even a healthy beast of prey of its voraciousness, if it were possible, with the aid of a whip, to force the beast to devour continuously, even when not hungry.
Even Johannes Kepler, Isaac Newton, Charles Darwin, Gregor Mendel, and Albert Einstein made serious mistakes. But the scientific enterprise arranges things so that teamwork prevails: What one of us, even the most brilliant among us, misses, another of us, even someone much less celebrated and capable, may detect and rectify.
Nowadays, we are confronted by a huge gap between rich and poor. This is not only morally wrong, but practically a mistake. It leads to the rich living in anxiety and the poor living in frustration, which has the potential to lead to more violence. We have to work to reduce this gap. It's truly unfair that some people should have so much while others go hungry.
It helps remove whatever fears or insecurities we may have and gives us the strength to cope with any obstacles we encounter. It is the principal source of success in life. Since we are not solely material creatures, it is a mistake to place all our hopes for happiness on external development alone. The key is to develop inner peace.
All philosophers make the common mistake of taking contemporary man as their starting point and of trying, through an analysis of him, to[21] reach a conclusion. "Man" involuntarily presents himself to them as an aeterna veritas as a passive element in every hurly-burly, as a fixed standard of things. Yet everything uttered by the philosopher on the subject of man is, in the last resort, nothing more than a piece of testimony concerning man during a very limited period of time.