“We face neither East nor West; we face forward.”

A thousand words will not leave so deep an impression as one deed.

If it is in our power to prevent something bad from happening, without thereby sacrificing anything of comparable moral importance, we ought, morally, to do it.

We are the first generation to be able to end poverty, and the last generation that can take steps to avoid the worst impacts of climate change.

To know and not to act is not yet to know.

If there's a book that you want to read, but it hasn't been written yet, then you must write it.

The philosophers have only interpreted the world, in various ways. The point, however, is to change it.

Begin, be bold, and venture to be wise.

After climbing a great hill, one only finds that there are many more hills to climb.