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Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
Freedom is the oxygen of creativity; without it, art suffocates.
The brain is still forming in our 20s, which means it's more open to change.
你必须相信你的想法,并愿意在众多挑战中坚持下去。
我想把美国从恐惧中解放出来。我希望人们害怕真正可怕的事情,比如战争和饥荒,而不是因为邻居有不同宗教信仰就害怕他。
The only limits you have are the ones you set for yourself.