I must study politics and war that my sons may have liberty to study mathematics and philosophy.

"Humor is the best way to connect with kids."

"I suppose it's like the Titanic. The iceberg was real, but the ship was just a ship."

The past is always with us, and it shapes who we are and what we become.

治理社会就应当完全根据这种共同的利益。人们总是愿意自己幸福，但人们并不总是能看清楚幸福。

"Do one thing every day that scares you."

信仰是伟大的逃避，是逃避思考和评估证据需要的伟大借口。