A forceful statement means expressing your thoughts or ideas with power, conviction, and emphasis to make a strong impact on others. It means speaking assertively and persuasively to get your point across effectively. Full definition
Here is Ross Snyder's forceful statement of the matter: «Development is the emergence of new centers out of which hot energies pour, new qualities, a new level of organization and control. (religion-online.org)
With a cover story in The New Republic, Bill McKibben made his most forceful statement on the climate crisis yet: «It's not that global warming is like a world war. (climateemergencydeclaration.org)
A new government report on the science of climate change has made it past the Trump White House unscathed with forceful statements about humanity's role in rising temperatures and their severe threat to the United States. (vox.com)