数学是逻辑思想的诗歌。

真正的天堂是我们已经失去的天堂。

Sustainability isn't an option anymore—it's a necessity for any business that wants to thrive in the 21st century.

"The greatest journeys are those that lead us back to our own humanity."

The writer must be a perpetual beginner, always doubting, always searching.

The strength of a habit is proportional to the amount of reinforcement.

夜晚并没有隐藏世界；它揭示了另一个世界。