do not think any vice trivial, and so practice it
... Do not think any virtue trivial, and so neglect it; do not think any vice trivial, and so practice it. 勿以善小而不为;勿以恶小而为之。 Don't bite off more than you can chew.
University Logistics Research
"一次性筷子"引发的思考 [辽河 LIAOHE] 勿以善小而不为--拒绝使用一次性筷子 [高校后勤研究 University Logistics Research] 济南市部分高等学校食堂筷子卫生状况调查 Surveys on the sanitation of chopsticks used by students in colleges and univers...
勿以善小而不为。勿:不要;为:做。意思是不要因为是很小的好事就不去做。语出《三国志·蜀书·先主传》:“勿以恶小而为之,勿以善小而不为。惟贤惟德,能服于人。”