His target-like way of thinking is hard to understand.

He is my biggest enemy.

What is that target?

He drew his bow aiming at the target.

He drew his bow aiming at the target.

In order to reduce food waste, we should plan our food consumption.

He always proactively suggests new ideas.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

Einstein proposed the theory of relativity.

He is writing a thesis on the theory of general relativity.