It is an essential feature of the just state that the wealthy be kept away from political power and that the politically powerful be kept away from wealth.

Plato worried that philosophical writing would take the place of living conversations for which, in philosophy, there is no substitute.

The will to matter is at least as important as the will to believe.

When the first people started to argue against slavery, for example, this was a new idea. If you crowd-source, you'd never come up with this. And so the - exactly the kind of progress we've made couldn't be made if we depend it on crowd-sourcing.

The contrast between the two, the sweetness and the badness, wrenches the heart of the lover as such sweetness on its own would not, and the lover shudders all the more at dread of the beloved's recklessness, for the sake of the sweetness that is there, and the shudder only makes more violent the shuddering that announces love.

To matter, to mind. ... What we mind is in our power, but whether we matter may not be - and there's the tragedy. ... Can anyone truthfully say, I don't matter and I don't mind?

We need science. We need empirical evidence. We can't just use mathematical reasoning to deduce the nature of the world.