“Logic may indeed be unshakeable, but it cannot withstand a man who is determined to live.”

“Logic is doubtless unshakable, but it cannot withstand a man who wants to go on living.”

“How much truth is contained in something can be best determined by making it thoroughly laughable and then watching to see how much joking around it can take. For truth is a matter that can withstand mockery, that is freshened by any ironic gesture directed at it. Whatever cannot withstand satire is false.”

“Logic may be conceived as ruling out what is absolutely impossible, and thus determining the field of what in the absence of empirical knowledge is abstractly possible.”

“Be men, or be more than men. Be steady to your purposes and firm as a rock. This ice is not made of such stuff as your hearts may be; it is mutable and cannot withstand you if you say that it shall not.”

“As long as Man continues to be the ruthless destroyer of lower living beings, he will never know health or peace. For as long as men massacre animals, they will kill each other. Indeed, he who sows the seed of murder and pain cannot reap joy and love.”