Authors:

The cross is like a walnut whose outer rind is bitter, but the inner kernel is pleasant and invigorating. So the cross does not offer any charm of outward appearance, but to the cross-bearer its true character is revealed, and he finds in it the choicest sweets of spiritual peace.

Sadhu Sundar Singh (2013). “At The Master's Feet”, p.38, Simon and Schuster
The cross is like a walnut whose outer rind is bitter, but the inner kernel is pleasant and invigorating. So the cross does not offer any charm of outward appearance, but to the cross-bearer its true character is