SIMPLE BUT DEEP

Buddhism in its original form was simple — simple but deep. Many scholars have made Buddhism too complicated, into a kind of metaphysics or philosophy. Some students of Buddhism spend a lot of time learning these systems of thought and do not have the time to practice. It is like Master Linji [Japanese: Rinzai], who learned a lot of Buddhism but found that learning Buddhism was not enough. So he abandoned the learning and began to practice.

Thich Nhat Hanh
Source: http://quotes.justdharma.com/simple-but-deep-thich-nhat-hanh/

The below master piece is simple but deep, too!