Too much knowledge makes the head bald. 學問太多催人老。

Too much familiarity breeds contempt. 過分熟悉會使人互不服氣。

Tomorrow never comes. 我生待明日，萬事成蹉跎。

To know oneself is true progress. 人貴有自知之明。

To know everything is to know nothing. 什麼都知道，一如什麼都不知道。

To err is human. 人非聖賢，孰能無過。

Tit for tat is fair play. 人不犯我，我不犯人；人若犯我，我必犯人。

Time tries all. 路遙知馬力，日久見人心。

Time past cannot be called back again. 時間不能倒流。

Time lost cannot be won again. 時光流逝，不可復得。