〈党员须宣传革命主义〉,在梧州对国民党员的演说,1921年10月29日至11月15日间
伤人的不是再见,而是随之而来的回忆。
The pursuit of mathematical knowledge is a never-ending adventure, filled with challenges, surprises, and the satisfaction of solving the unsolvable.
The test of a psychological theory is its applicability to life.