A small spark often ignites a big flame.

I ignite the stove.

The spirit of creativity ignites sparks of nobility in the soul.

Tom was asked to speak at a college event, which ignited in him a passion for activism.

The encounter ignited a flame that propelled her to reinvent herself.

That seemingly benign request ignited a furor in Congress over presidential powers and states’ rights.

The book ignited a fierce debate in the academic community.

After he turned the key, the car engine ignited.

Fire crews said forests and fields, baked to tinder by the intense heat, were easily ignited by such things as a discarded cigarette or concentration of the sun's rays by a shard of glass.

What you want to ignite in others has to be burning within yourself.