藉由問一個自己無法回答的問題，試圖完成一個自己無法達到的任務，一個人可以實現他存在的目的。A man may fulfill the object of his existence by asking a question he cannot answer and attempting a task he cannot achieve.

藉由問一個自己無法回答的問題，試圖完成一個自己無法達到的任務，一個人可以實現他存在的目的。
A man may fulfill the object of his existence by asking a question he cannot answer and attempting a task he cannot achieve.— Oliver Wendell Holmes Sr., Physician