Yes, quotes from customer discovery interviews can be very useful for developing marketing messaging. By using quotes from customers, you can create more authentic and compelling messaging that resonates with your target audience. Here are some tips for using quotes in your marketing messaging:

1. Choose quotes that align with your brand messaging: Select quotes that align with your brand messaging and reinforce the key benefits and value proposition of your product or service.

2. Highlight the customer's pain points: Use quotes to highlight the customer's pain points and demonstrate how your product or service addresses their needs and solves their problems.

3. Use quotes in your copy: Incorporate quotes directly into your marketing copy to add authenticity and credibility. For example, you could use a quote as a headline or include it in a customer testimonial.

4. Include the customer's name and details: When using quotes in your marketing, be sure to include the customer's name and other relevant details (such as their job title or company) to add credibility and authenticity.

5. Use quotes in visual content: Consider using quotes in visual content, such as social media graphics or videos, to make them more engaging and impactful.

By using quotes effectively in your marketing messaging, you can create more compelling and authentic content that resonates with your target audience and helps to build trust and credibility for your brand.