. . . as to moral feeling, this supposed special sense, the appeal to it is indeed superficial when those who cannot think believe that feeling will help them out, even in what concerns general laws: and besides, feelings which naturally differ infinitely in degree cannot furnish a uniform standard of good and evil, nor has any one a right to form judgments for others by his own feelings. . . .

Nature does nothing in vain, and in the use of means to her goals she is not prodigal.

Give me matter, and I will construct a world out of it!

It is not necessary that whilst I live I live happily; but it is necessary that so long as I live I should live honourably.

For peace to reign on Earth, humans must evolve into new beings who have learned to see the whole first.

Men will not understand ... that when they fulfil their duties to men, they fulfil thereby God's commandments; that they are consequently always in the service of God, as long as their actions are moral, and that it is absolutely impossible to serve God otherwise.

Experience without theory is blind, but theory without experience is mere intellectual play.