——〈在香港大学的演说〉（又名〈革命思想之产生〉），1923年2月19日
High expectations are the key to everything.
Quality is not a label; it is a standard.
Those who deny freedom to others, deserve it not for themselves; and, under a just God, can not long retain it.
An ounce of practice is worth more than tons of preaching.
The soul should always stand ajar, ready to welcome the ecstatic experience.
Until one has loved an animal, a part of one's soul remains unawakened.